I agree with what the rest say: Malfoy is a good Seeker, it’s just that Harry is better than him. At age 11, Malfoy can already ride a broomstick well enough. Considering that he stayed on the team for the second year running, he must have good flying and/or Seeking skills.

And yeah, I always thought that Boggarts eat fear. Like they morph into the thing a person fears most, so as to feed on the fear being emanated. In a way, ‘sensing’ or breathing in fear for them is like eating food is for us. Well, that’s how I always saw it anyway.

As for Malfoy catching the Snitch, it never says anywhere that he is *bad* at seeking, its just he never beats Harry. Keep in mind that Harry and Draco were the only two able to master a broomstick at age eleven, and the fact that Malfoy is able to hold onto his spot in the Slytherin Quidditch team for 4 years after his father bought the team members brooms. Also you never see Cho cathc a snitch either so she may be even worse than Malfoy

And I also believe they must live off fear. However, what happens to them if they’re in an enclosed space for a very long time without any human contact? Do they wither away and die? I’m also a believer that they do exist in the muggle world. And it isn’t a case of whether they see them or not, because a boggart changes its form to adopt the features of the greatest fear of those who are looking at it. So they do see it, but they only see their fear, just like witches and wizards. I hope that makes sense.

One thing I wanted to point out about this chapter: after his first lesson with the boggart-dementor, Harry reflects on how he half-wants to hear his parents in his head. When he tells himself to stop it, they’re dead, he says they’re “just echoes”. This is exactly what Dumbledore insists Harry understand at the end of GoF after he witnesses the effects of Priori Incantatem. I just thought that was an interesting connection, especially since Harry is the one that first says it, not Dumbledore.